Previous research on the use of peripheral vision to identify two spatially separated stimuli simultaneously has led to the conclusion that the focus of attention has the form of a symmetric ellipse with a broader expansion along the horizontal compared to the vertical meridian. However, research on pseudoneglect has indicated that attention is not symmetrically distributed to the whole visual field. Here, we test if the attention window is indeed symmetrical with regard to its shape and resolution during peripheral vision. The results indicate that the position of those stimuli relative to the focus of attention influences the ability to identify a given set of stimuli. Specifically, stimuli presented to the left and top of the fixation point were more frequently identified correctly compared to those presented to the right bottom. That is, the attention window is rather not symmetric, which must be considered in future studies on the nature of the focus of attention.

中文翻译：

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周边视觉注意力不对称

先前关于使用周边视觉同时识别两个空间上分离的刺激的研究得出的结论是，注意力的焦点具有对称椭圆的形式，与垂直子午线相比，沿着水平方向的扩展更宽。然而，对假忽视的研究表明，注意力并不是对称地分布到整个视野的。在这里，我们测试周边视觉期间注意窗口的形状和分辨率是否确实对称。结果表明，这些刺激相对于注意力焦点的位置会影响识别一组给定刺激的能力。具体来说，与呈现在右下角的刺激相比，呈现在注视点左侧和顶部的刺激更容易被正确识别。也就是说，注意力窗口并不是对称的，在未来关于注意力焦点性质的研究中必须考虑这一点。